Elements of buildings the fire resistance rating classifies the ability of an assembly to confine and isolate fire within a zone comprised of fire resistance rated walls ceiling and floor assemblies.
Fire rated 2 hour shaft wall assembly.
The ratings relate to fire tests designed to determine how quickly fire can raise the temperature to unacceptable levels.
Type of assembly required assembly rating hours minimum fire door fire assembly fire rating.
Usg provides resources here for our ul wall assemblies for seamless integration into any construction project.
Two doors each with a fire protection rating of 1 1 2 hours installed on opposite side of the same opening in a fire wall shall be deemed equivalent in fire protection rating to one 3 hour door.
Face layer 5 8 15 9 mm toughrock fireguard x products or 5 8 15 9 mm densarmor plus fireguard gypsum panels installed vertically to studs with 1 58 type s.
For testing requirements see section 715 4 3.
Use steel studs and two layers of 1 2 inch type c drywall on each side of the studs for a two hour fire rating on an interior wall.
These wall assembly files are used for planning and estimation purposes for many ul wall types such as fire rated wall assemblies.
Two hour three hour and four hour rated walls require additional protection of penetrations since they must resist higher temperatures than a one hour rated wall and for a longer time.
Base layer of 5 8 15 9 mm toughrock fireguard x products or 2 8 15 9 mm densarmor plus fireguard gypsum panels installed horizontally or vertically with 1 type s screws 24 o c.
These systems utilize either an i stud or a c t stud and j track to.
2 hour vertical shaftwall system proroc shaftwall systems provide one two or three hour fire resistance ratings in non load bearing configurations.
U498 2 hour stairwell construction 1 fire shield shaftliner j track 020 0329 3 leg 0329 only view a a i stud 020 0329 u499 1 hour shaftwall allowable wall heights for 1 hour fire rated i stud assemblies stud stud min.
Head of wall firestop system gypsum board fire trak shadowline.
The systems are designed to withstand the intermittent surges of air pressure caused by fast moving elevator cabs.
Ul design u499 w419.
Use special fiberglass rated for use in firewalls.
Sw 106 1 hour shaftwall with deflection track.
Deflection 5 7.
